I don't have the time to do this, but I thought I would mention that I found that Google Books has several full orchestral scores of pieces by Glazunov available for download (though some have mentioned that they were having trouble DLing them outside the US). Just use this search: .
Hi I'm a chorus master in France and I try to find the Festive Cantata for women's voices and eight hands pianos by Glazounov. I have a contact in Moscow who did not find the score in the public library that works with the Music Conservatory, and even he thought the work don't exist! Could you tell me where do you find the mention of this score, and do you know if it's published and where. Thanks a lot for your help!